tracing: Kill "filter_string" arg of replace_preds()

Cosmetic, but replace_preds() doesn't need/use "char *filter_string".
Remove it to microsimplify the code.

Link: http://lkml.kernel.org/p/20140715184832.GA20519@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index c2ef5a5f21dacdbdd376aa9ca77d37cc5ba345af..7a8c1528e141f871cc9047202f55b838e51c50f6 100644 (file)
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1546,7 +1546,6 @@ static int fold_pred_tree(struct event_filter *filter,
 static int replace_preds(struct ftrace_event_call *call,
                         struct event_filter *filter,
                         struct filter_parse_state *ps,
-                        char *filter_string,
                         bool dry_run)
 {
        char *operand1 = NULL, *operand2 = NULL;
@@ -1739,8 +1738,7 @@ static int replace_system_preds(struct ftrace_subsystem_dir *dir,
                 * Try to see if the filter can be applied
                 *  (filter arg is ignored on dry_run)
                 */
-               err = replace_preds(file->event_call, NULL, ps,
-                                       filter_string, true);
+               err = replace_preds(file->event_call, NULL, ps, true);
                if (err)
                        event_set_no_set_filter_flag(file);
                else
@@ -1772,8 +1770,7 @@ static int replace_system_preds(struct ftrace_subsystem_dir *dir,
                if (err)
                        goto fail_mem;
 
-               err = replace_preds(file->event_call, filter, ps,
-                                       filter_string, false);
+               err = replace_preds(file->event_call, filter, ps, false);
                if (err) {
                        filter_disable(file);
                        parse_error(ps, FILT_ERR_BAD_SUBSYS_FILTER, 0);
@@ -1895,7 +1892,7 @@ static int create_filter(struct ftrace_event_call *call,
 
        err = create_filter_start(filter_str, set_str, &ps, &filter);
        if (!err) {
-               err = replace_preds(call, filter, ps, filter_str, false);
+               err = replace_preds(call, filter, ps, false);
                if (err && set_str)
                        append_filter_err(ps, filter);
        }